Quick answer:
The John Deere 6620 Premium battery size is listed as 12 V.
Voltage12 V
John Deere 6620 Premium Battery Specs
| Battery voltage | 12 V |
|---|
Battery Spec Comparisons Chart
Voltage comparison
John Deere 6620 Premium Battery FAQ
| Battery voltage | The John Deere 6620 Premium tractor battery voltage is 12 volts |
|---|---|
| Battery group size | The John Deere 6620 Premium tractor uses a 12-volt battery with a charging system alternator of 90 amps |
| Battery location | The battery on the John Deere 6620 Premium tractor is located underneath the right access step |
Official information note
Mistakes do happen. Please check official deere.com website for official information.
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